Goals:This was the last of three Soviet spacecraft designed to make a survivable landing on the Moon in 1963. The 100 kilogram (220 pound) egg-shaped lander carried an imaging system and an instrument to measure radiation.

Accomplishments: Although this spacecraft successfully left Earth orbit, a navigation failure sent it hurtling past the Moon at a distance of 8,500 km (5,282 miles) instead of landing on the Moon as planned.